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Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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Old 24th November 2003, 03:07 AM   #11
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Hi,

Quote:
ahem... hmmmm.. upssss... i didnt know bout that........plans change, then... what about 5687 with parallel sections , 300V, 2 x 12k anode + 132 R cathode resistor(4V bias), unbypassed (drew this on the curves)... zout would be (???) ~1.8k
Don't // unless you bloody have to for crying out loud.

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Old 24th November 2003, 10:50 AM   #12
Aiace is offline Aiace  Italy
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Default Too much tubes

Are you sure you need V2 ?
You should try to listen your circuit with anly V1: I bet you'll love the sigle stage common catode amplifier

Bye
Aiace
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Old 24th November 2003, 08:28 PM   #13
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ill try it... in both configurations.. generally, tubes are said to operate best in higher currents and voltages... larger energy management?... i dont know.. this 5687 seems to be nice... (too much of it).... any european resource for jan - phillips ones?
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i am currently using 60,000 uF of capacitance in my preamplifier..
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Old 25th November 2003, 02:19 AM   #14
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Hi,

Quote:
ill try it... in both configurations.. generally, tubes are said to operate best in higher currents and voltages...
Leaving contradictions aside that tube and the 6922 are opposing sonically, one too strident mostly, the other too dark sounding according to taste.

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